Question

Jawab no 1 dan 2 pakai jalannya ya....

Answer 1

GB (1)

L = (alas atas + alas bawah) x tinggi x 1/2
   = 35 x 4
   = 140 cm
K = (10 x 2) + 15 + 20
   = 20 + 35
   = 55

GB (2)

L = a . t
   = 20 x 12
   = 240

K = 20 x 2 + 15 x 2
   = 40 + 30
   = 70